Biotrue multi-purpose solution – experience advanced lens care inspired by the biology of your eyes. Biotrue was developed following intensive study on how the eye works naturally to clean, hydrate and keep itself healthy. Biotrue makes wearing contact lenses easier on your eyes, because it works like your eyes. Biotrue provides excellent disinfection and brings together three bio-inspired innovations: Matches the pH of healthy tears, utilises lubricant found naturally in the eyes, keeps certain beneficial tear proteins active. Biotrue helps keep lenses moist for up to 20 hours.